Q.Which CSS position value keeps an element fixed to the browser window so it stays visible even when the page is scrolled?
(A) static
(B) relative
(C) absolute
(D) fixed

This tests the values of the position property, especially the one used for a sticky menu bar that does not scroll away. …

The position property decides how an element is placed relative to the page flow.

(A) static is the default — the element stays in normal flow and cannot be offset — incorrect.

(B) relative nudges an element from its normal place but it still scrolls with the page — incorrect.

(C) absolute positions relative to a positioned ancestor and scrolls with the page — incorrect. …

Confusing fixed with absolute. Both remove the element from normal flow, but absolute positions relative to a positioned ancestor (and scrolls with the page), …